﻿function showSpeech(year) {
   var silverlight = document.getElementById("Xaml1"); 

   if (silverlight)
        silverlight.Content.Page.ShowSpeech(year);
}

function f_scrollTop() {
    return f_filterResults(
		window.pageYOffset ? window.pageYOffset : 0,
		document.documentElement ? document.documentElement.scrollTop : 0,
		document.body ? document.body.scrollTop : 0
	);
}
function f_filterResults(n_win, n_docel, n_body) {
    var n_result = n_win ? n_win : 0;
    if (n_docel && (!n_result || (n_result > n_docel)))
        n_result = n_docel;
    return n_body && (!n_result || (n_result > n_body)) ? n_body : n_result;
}

function checkScroll() {
    var pos = f_scrollTop();
    var btt = document.getElementById('back-to-top');
    if (pos > 995) {
        btt.setAttribute("class", "back-to-top-scrolled");
        btt.setAttribute("className", "back-to-top-scrolled");
    }
    else {
        btt.setAttribute("class", "back-to-top");
        btt.setAttribute("className", "back-to-top");
    }
}

window.onscroll = checkScroll;